Planooraph co



J. N. STRCKLAN.

LOCK.

APPLICATION FILED FEB. 2,1918.

Patented July l5, 1919.

2 SHEETS--SHEET i.

Jawa Mamazlm? J. N. STBICKLAN.

LOCK.

APPLICATION msn rE.2,1s1a.

1 ,3 1 0,307. Patented July 15, 1919.

2 SHEETS-SHEET 2.

MM/nm@ g 351x @gm THE COLUMBIA PLANOGRAPH C0., WASHxNGToN, D.. c.

U im) STATES PATENT @EHC JACOB N. STRICKLAN, OF SAVANNAH, GEORGIA.

LOCK.

T 0 all LU/wm t may concern.' v p Be it known that I, JACOB N, STRICKLAN, a citizen of the United States, residing at Savannah, in the county of Chatham and State of Georgia, have invented new and useful Improvements in Locks, of `which the i door at the same time the guard member is thrown across the key slot.,

TA still further object is'to pro-vide in connection with the construction above named a tumbler mounted to be thrown into position for engaging the latch bolt, by a key inserted from the outside of the door.

With the foregoing and other objects in view, the invention consists in the novel construction, combination and arrangement of elements hereinafter described and claimed.

In the drawings,

Figure 1 is a view of the lock in side elevation Figs. 2 and Bare side elevations, with the cover -plate detached Figs. l and 5 are fragmentary side elevations l Figs. 6 to 8 are elevations of the keycontrolled elements Fig. 9 is a detail showing the key-hole guard and a rotatable device accessible from the inner side of the door Fig. 10 is a detail showing the arrangement of the slots in one of the plates of the casing. f

The main casing of the lock is designated 10 and is closed on one side by means of a plate 11 provided with an aperture 12 for the latch rollback, an aperture 18 accommodating the end of a tumbler throwing member, a key slot 14: and an aperture 15 for the insertion of a screw 1'6 for securing the plate member 11 into position.

The oppositely located plate member of the 'casing is provided with apertures or openings corres ending with those desig- Ill, i3 aan iti Specification of Letters Patent. Patented July 1-5, 1919, Application filed Fetruay 2. 191s. serial No. 215,115.

videdwith a reduced portion 18, a slot 19 `extending longitudinally and a recess portion in one side thereof the end walls of `which are shown at 20 and 21.

The latch rollback is designated 24 and the projecting portions 25 thereof `engage the wall 21 of thebolt. The knob spindle is designated 26.

An offset portion 33 is provided with a notch 34 receiving lone end of a flat spring 35 which 1s bowed againstone wall of the casing at 36, the opposite end-of thespring engaging an upstanding lug 38 onvtumbler 28. The lower end of tumbler-28l projects laterally as shown at 39 and is provided with a curved edge coperating with one of the slots of the key.

A bolt 40 is operated by the key when inserted from either side of the lock and the upper end 41 thereof is thrown into position for retaining the latch bolt against retraction. This bolt is provided with a slot 42 through which pin 29 passes, and with a slot 43 through which pin 31 passes. A laterally oset portion 44 is notched or cut away at 45, this portion being engaged by the key. A notch 46 accommodates the lug 38 projecting from the side of tumbler 28. The lateral movement of tumbler 28 about its pivot 29 throws the lug 38 out of engagement with the notch 46.

A bolt 50 is provided with a` slot 51 accommodating pin 29 and with a slot 52 through which pin 31 passes. This plate has an offset 53 provided with a notch 511 engaged by the bolt throw 55 comprising a main portion or sleeve and laterally extending ears`56 and 57` the former engaging the notch 54 and the latter being engaged by the end 58 of a substantially V-shaped spring 60 passing around a pin 61 and extending upwardly into position for engaging the latch at the point 62. VThe bolt 50 moves into the path of the latch bolt upon the movement of a key hole guard to operative position, this movement being effected by the means described below.

Rigidly mounted with reference to tliebolt threw is a, key-hele designated sa and provided with a guard member proper shown at G6. The bolt throw 55 is provided with transverse notches G7'0nopposite ends thereof in order to permit of the operation of the device by suitable means applied on Vwith a longitudinal lug 75 engaging a slot 7 6, in an outer sleeve 77 0n which the operating knob 78 is mounted. This outer sleeve 77 is provided with lugs 79 engaging slots S0 formed in the wall members of the casing, each wall being thus provided in order to permit of the reversal oi' the opera-ting device. A coiled spring 8l bears against the end of the sleeve 77 or the adjacent surface of the knob 78 and produces engagement between said sleeve and the casing proper retaining the bolt 50 and the key-hole guard 65 in operative position. The longitudinal moifen'ient of the sleeve 77 and the subsequent rotary movement thereof operates to throw the bolt 50 and the key-hole guard to either operative or inoperative position.

An adjustably mounted ward is shown adjacent to the key-hole and may be positioned to suit the key to be used. This ward 90 is retained in position by means of'a plate member 91 through which a screw 92 passes for engaging the ward, other screws 93 retaining the plate in position. lThe ward is provided with an oifset 95 operating within a slot 96 in one of the side members of the casing.

lVhat is claimed is:

In aV device of the class described, a latch bolt, a latch rollback, a key operated bolt, a tumbler cooperating with and locking the key operated bolt, a key hole guard, a bolt throw rigidly mounting the guard, a bolt projected by the bolt throw into the path of the latch bolt when the key hole guard is Vmoved to operative position, and means for operating the bolt throw.

In testimony whereof I affix my signature.

JACOB N. sTRickLAN Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

